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Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20230712-en
  • resource tags

    arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
  • submitted
    03/08/2023, 18:17

General

  • Target

    5484d36faef27e1bf2ab3f65c1e1fa57_cryptolocker_JC.exe

  • Size

    118KB

  • MD5

    5484d36faef27e1bf2ab3f65c1e1fa57

  • SHA1

    ca2b88bd36e490e4d10245ac79bccc289d516de5

  • SHA256

    31e67c23475f0e5a19c081db1023894d9348af14a2ded11ea53ad70649e088a4

  • SHA512

    84bb7f569102ac062126578a248c280868b2f7d5066fbade13666f3ceaf9bda1daf07737106bb6765e4c93122b8a970f138e8adbc7a3e40384716c6c76ad1027

  • SSDEEP

    1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp699G/TG4dYU:AnBdOOtEvwDpj6zG

Score
7/10
upx

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 7 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5484d36faef27e1bf2ab3f65c1e1fa57_cryptolocker_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\5484d36faef27e1bf2ab3f65c1e1fa57_cryptolocker_JC.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2536
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2884

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\asih.exe

    Filesize

    118KB

    MD5

    20c907e182f9685fbac49567927941c2

    SHA1

    bc36b34308de3a778c6cf2e9e60ca718f57ae924

    SHA256

    088ed9498e153fb9d9265a391517f94954c30f6a127468c7dc81d42d58c00fee

    SHA512

    a27c33845f5881dd999417e75751c0e643d8c460f4959b10fc36396846cd8578a46a09f60ba8724ce70113efd97d44d2cb268040e52f9d37d9a1c6122e1f4c08

  • C:\Users\Admin\AppData\Local\Temp\asih.exe

    Filesize

    118KB

    MD5

    20c907e182f9685fbac49567927941c2

    SHA1

    bc36b34308de3a778c6cf2e9e60ca718f57ae924

    SHA256

    088ed9498e153fb9d9265a391517f94954c30f6a127468c7dc81d42d58c00fee

    SHA512

    a27c33845f5881dd999417e75751c0e643d8c460f4959b10fc36396846cd8578a46a09f60ba8724ce70113efd97d44d2cb268040e52f9d37d9a1c6122e1f4c08

  • \Users\Admin\AppData\Local\Temp\asih.exe

    Filesize

    118KB

    MD5

    20c907e182f9685fbac49567927941c2

    SHA1

    bc36b34308de3a778c6cf2e9e60ca718f57ae924

    SHA256

    088ed9498e153fb9d9265a391517f94954c30f6a127468c7dc81d42d58c00fee

    SHA512

    a27c33845f5881dd999417e75751c0e643d8c460f4959b10fc36396846cd8578a46a09f60ba8724ce70113efd97d44d2cb268040e52f9d37d9a1c6122e1f4c08

  • memory/2536-69-0x0000000001FE0000-0x0000000001FEF000-memory.dmp

    Filesize

    60KB

  • memory/2536-55-0x0000000000270000-0x0000000000276000-memory.dmp

    Filesize

    24KB

  • memory/2536-67-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2536-53-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2536-56-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2536-54-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2536-80-0x0000000001FE0000-0x0000000001FEF000-memory.dmp

    Filesize

    60KB

  • memory/2884-73-0x0000000000490000-0x0000000000496000-memory.dmp

    Filesize

    24KB

  • memory/2884-72-0x0000000000300000-0x0000000000306000-memory.dmp

    Filesize

    24KB

  • memory/2884-71-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2884-81-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB